:root{--bg:#f2f5f8;--card:#fff;--fg:#1e2a38;--muted:#5b6876;--line:#dfe5ec;--ai:#1f4e79;--ai2:#163a5c;--amber:#c47f17;--amber-soft:#fff6e6;--soft:#e9eff6;--ok:#2e7d5b;--fs:18px;--r:14px}
html{font-size:var(--fs)}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font-family:"Hiragino Maru Gothic ProN","BIZ UDPGothic","Yu Gothic UI","Yu Gothic","Meiryo","Noto Sans JP",sans-serif;line-height:1.9;-webkit-text-size-adjust:100%}
a{color:var(--ai)}a:hover{text-decoration:none}
img{max-width:100%}
.wrap{max-width:900px;margin:0 auto;padding:0 16px}
.top{background:var(--card);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--fg)}
.brand .mk{display:inline-flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:12px;background:var(--ai);color:#fff;font-weight:800;font-size:1.05rem;letter-spacing:.02em;flex:none}
.brand b{display:block;font-size:1.25rem;line-height:1.3}.brand small{display:block;font-size:.78rem;color:var(--muted)}
.fs{display:flex;gap:6px;align-items:center}.fs span{font-size:.8rem;color:var(--muted)}
.fs button{min-width:44px;min-height:44px;border:1px solid var(--line);background:#fff;border-radius:10px;cursor:pointer;font-size:.95rem;color:var(--fg)}
.fs button[aria-pressed=true]{background:var(--ai);color:#fff;border-color:var(--ai)}
.navbar{background:var(--card);position:sticky;top:0;z-index:5;border-bottom:1px solid var(--line)}
.navbar .wrap{display:flex;gap:8px;overflow-x:auto;padding:8px 16px;scrollbar-width:none}.navbar .wrap::-webkit-scrollbar{display:none}
.navbar a{flex:none;text-decoration:none;color:var(--fg);background:var(--soft);padding:8px 14px;border-radius:999px;min-height:40px;display:inline-flex;align-items:center;font-size:.95rem}
.navbar a:hover,.navbar a.on{background:var(--ai);color:#fff}
main{padding:22px 0 48px}
.crumb{font-size:.88rem;color:var(--muted);margin:0 0 10px;display:flex;flex-wrap:wrap;gap:4px}.crumb a{color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px 22px;margin:0 0 18px;scroll-margin-top:64px}
.card.head{border-top:6px solid var(--ai)}
h1{font-size:1.55rem;line-height:1.45;margin:.1em 0 .5em}
.lede{font-size:1.05rem;margin:0 0 12px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 0}
.chips span{background:var(--soft);border-radius:999px;padding:4px 12px;font-size:.9rem}
.chips span b{color:var(--ai)}
h2{font-size:1.22rem;margin:0 0 .6em;padding-left:18px;position:relative;line-height:1.4}
h2::before{content:"";position:absolute;left:0;top:.55em;width:10px;height:10px;border-radius:50%;background:var(--amber)}
h3{font-size:1.05rem;margin:1em 0 .4em;color:var(--ai2)}
.shop{background:var(--soft);border:none}
.shop .q,.shop .a{display:flex;gap:10px;align-items:flex-start;margin:6px 0}
.shop .who{flex:none;width:64px;text-align:center;border-radius:8px;padding:2px 0;font-size:.85rem;font-weight:700}
.shop .q .who{background:#fff;color:var(--muted)}.shop .a .who{background:var(--ai);color:#fff}
.shop p{margin:0}
.hitokoto{background:var(--amber-soft);border-left:6px solid var(--amber);border-radius:8px;padding:12px 16px;margin:14px 0 0}
.hitokoto b{display:block;font-size:.85rem;color:var(--amber);margin-bottom:2px}
ul.plain{padding-left:1.3em;margin:.3em 0}ul.plain li{margin:.25em 0}
ol.steps{list-style:none;padding:0;margin:0;counter-reset:s}
ol.steps li{position:relative;padding:10px 12px 10px 58px;margin:0 0 10px;background:var(--soft);border-radius:10px;counter-increment:s;min-height:52px}
ol.steps li::before{content:counter(s);position:absolute;left:12px;top:10px;width:34px;height:34px;border-radius:50%;background:var(--ai);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}
ol.steps .tip{display:block;font-size:.9rem;color:var(--muted);margin-top:4px}
table{border-collapse:collapse;width:100%;margin:.4em 0}
th,td{border-bottom:1px solid var(--line);padding:8px 6px;text-align:left;vertical-align:top}
th{width:42%;font-weight:600;color:var(--ai2)}th small{display:block;font-weight:400;color:var(--muted);font-size:.85rem}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:640px){.two{grid-template-columns:1fr}}
.box{background:var(--soft);border-radius:10px;padding:12px 14px}
.box h3{margin:0 0 .3em}
details.faq{border:1px solid var(--line);border-radius:10px;padding:0;margin:0 0 8px;background:#fff}
details.faq summary{cursor:pointer;padding:12px 14px;font-weight:600;list-style:none;position:relative;padding-right:40px}
details.faq summary::after{content:"＋";position:absolute;right:14px;top:10px;color:var(--ai);font-size:1.2rem}
details.faq[open] summary::after{content:"－"}
details.faq p{margin:0;padding:0 14px 12px}
.rel{display:flex;flex-wrap:wrap;gap:8px}
.rel a{text-decoration:none;background:var(--soft);color:var(--ai2);padding:8px 14px;border-radius:999px;min-height:40px;display:inline-flex;align-items:center}
.rel a:hover{background:var(--ai);color:#fff}
.meta{color:var(--muted);font-size:.9rem}
.hero{background:linear-gradient(135deg,var(--ai) 0%,var(--ai2) 100%);color:#fff;border-radius:var(--r);padding:28px 24px;margin:0 0 18px}
.hero h1{color:#fff;margin:0 0 .3em}.hero p{margin:0 0 14px;opacity:.95}
.search{display:flex;gap:8px;max-width:560px}
.search input{flex:1;font-size:1rem;padding:12px 14px;border:1px solid var(--line);border-radius:10px;min-height:48px}
.search button{font-size:1rem;padding:0 20px;border:none;background:var(--amber);color:#fff;border-radius:10px;cursor:pointer;min-height:48px;font-weight:700}
.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px}
.tiles a{display:block;text-decoration:none;color:var(--fg);background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px;min-height:72px}
.tiles a:hover{border-color:var(--ai)}
.tiles b{display:block;color:var(--ai)}.tiles small{color:var(--muted)}
.cols{columns:2;column-gap:24px;padding-left:1.2em;margin:.3em 0}@media(max-width:640px){.cols{columns:1}}
.cols li{break-inside:avoid;margin:.2em 0}
.list h2{margin-top:1.2em}
.btn{display:inline-block;background:var(--ai);color:#fff;text-decoration:none;padding:10px 18px;border-radius:10px;min-height:44px}
footer{background:var(--ai2);color:#dfe8f2;padding:26px 0 34px;font-size:.92rem}
footer .wrap{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between}
footer a{color:#fff;margin-right:14px}
footer .copy{width:100%;opacity:.8}
.result{padding:10px 0;border-bottom:1px solid var(--line)}.result a{font-weight:600}.result small{display:block;color:var(--muted)}
@media(max-width:640px){.card{padding:16px}h1{font-size:1.35rem}.brand b{font-size:1.1rem}}